Stem and soil respiration in fertilised plots in the Central Amazon, 2017-2019

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Natural Environment Research Council

This dataset is available under the terms of the Open Government Licence

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https://doi.org/10.5285/591e3708-7ff1-483b-9156-15c721c00daf

The dataset contains stem respiration (ppm) of 320 trees with DBH (Diameter at breast height) > 26 cm, measured with the EGM-4 (Environmental Gas Monitor for CO2). Data were collected on October 2019. In relation to the soil respiration dataset, it contains soil respiration (µmol CO2m-2 s-1) of different type of collars placed on the forest floor, and measured with the LI – 8100 A soil respiration system. Data were collected from June 2017 to October 2019. In both activities, leak tests were done before collections.

All research was conducted in a field site approximately 80 km north of Manaus, in the state of Amazonas, Brasil.

Publication date: 2021-01-26

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Format

Comma-separated values (CSV)

Spatial information

Study area

Spatial representation type

Tabular (text)

Spatial reference system

WGS 84 / Pseudo-Mercator

Temporal information

Temporal extent

2019-10-01 to 2019-10-31

Provenance & quality

Measurements of stem respiration (ppm) were performed on 320 trees with DBH > 25 cm, with 10 trees in each plot, during October 2019. CO2 stem efflux was measured with an infrared gas analyser (EGM-4, PP systems), where a chamber was placed on to a collar installed in the tree, and detected the rate of CO2 accumulation for a period of two minutes.

The collar was sealed with a special glue, and inspections with a flashlight were made to check for any holes B) An EGM-4 portable Infra Red Gas Analyser (IRGA) right and the chamber (left) for measurement of CO2 efflux.

We also measured soil respiration rates (autotrophic and heterotrophic) using the Li – 8100A soil respiration system (Li-cor, Lincoln, NE, USA), equipped with a 20 cm survey chamber (Model:8100-101). The equipment was set up to an observation length of 1 minute and 30 seconds, and the pre purge and pos purge to 10 seconds.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:

Cunha, H.F.V.; Andersen, K.; Rosa, J.S.; Quesada, C.A.; Hartley, I.P. (2021). Stem and soil respiration in fertilised plots in the Central Amazon, 2017-2019. NERC Environmental Information Data Centre. https://doi.org/10.5285/591e3708-7ff1-483b-9156-15c721c00daf

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Natural Environment Research Council